Queue Profiles Parameters - Digi TransPort User Manual

Where <value> is the default queue number required and has a value from 0 to 9.
Note
DSCP code 64 is not actually a valid code but is used to set up the default priority.

Queue Profiles parameters

Up to 12 distinct queue "profiles" may be defined using this page that may then be assigned to
QoS queues as required. The queue profile determines how QoS queues with that profile
assigned to them will behave.
Queue
This is the queue number that relates to the queues defined in the DCSP mappings page.
Minimum kbps
The value in this text box sets the minimum data transfer rate in kilobits/second that the
router will try to attain for the queue.
Maximum kbps
The value in this text box sets the maximum data transfer rate in kilobits/second that the
router will try to attain for this queue. This means that if the router determines that
bandwidth is available to send more packets from a queue that has reached its Minimum kbps
setting, it will send more packets from that queue until the Maximum kbps setting is reached.
Note that if the bandwidth on a queue should be restricted, setting the Maximum kbps value
to the same as, or lower than the Minimum kbps value ensures that only the Minimum kbps
setting will be achieved.
Maximum Packet Queue Length
The value in this text box specifies the maximum length of a queue in terms of the number of
packets in the queue. Any packets received by the router that would cause the maximum
length to be exceeded, are dropped.
WRED Minimum Threshold
The value in this text box specifies the minimum queue length threshold for using the WRED
algorithm to drop packets. Once the queue length exceeds this value, the WRED algorithm
may cause packets to be dropped.
WRED Maximum Threshold
The value in this text box specifies the maximum queue length threshold for using the WRED
algorithm to drop packets. Once the queue length exceeds this value, the WRED algorithm will
cause all packets to be dropped.
WRED Maximum Drop Probability (%)
The value in this text box sets the maximum percentage probability used by the WRED
algorithm to determine whether or not a packet should be dropped when the queue length is
approaching the WRED maximum threshold value.
Note If the length of a queue is less than the WRED minimum threshold value there is a 0%
chance that a packet will be dropped. When the queue length is between the WRED
minimum and maximum values, the % probability of a packet being dropped increases
linearly up to the WRED maximum drop probability.
Digi TransPort User Guide
Queue Profiles parameters
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